﻿/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2008 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    http://www.gnu.org/licenses/gpl.html
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * == END LICENSE ==
 *
 * Defines the FCKXml object that is used for XML data calls
 * and XML processing.
 *
 * This script is shared by almost all pages that compose the
 * File Browser frameset.
 */

var FCKXml = function()
{}

FCKXml.prototype.GetHttpRequest = function()
{
	// Gecko / IE7
	try { return new XMLHttpRequest(); }
	catch(e) {}

	// IE6
	try { return new ActiveXObject( 'Msxml2.XMLHTTP' ) ; }
	catch(e) {}

	// IE5
	try { return new ActiveXObject( 'Microsoft.XMLHTTP' ) ; }
	catch(e) {}

	return null ;
}

FCKXml.prototype.LoadUrl = function (urlToCall, asyncFunctionPointer) {
    //alert("xml");
    var oFCKXml = this;

    var bAsync = (typeof (asyncFunctionPointer) == 'function');

    var oXmlHttp = this.GetHttpRequest();
    
    oXmlHttp.open("GET", urlToCall, bAsync);

    if (bAsync) {
        oXmlHttp.onreadystatechange = function () {
            if (oXmlHttp.readyState == 4) {

                var oXml;
                try {
                    // this is the same test for an FF2 bug as in fckxml_gecko.js
                    // but we've moved the responseXML assignment into the try{}
                    // so we don't even have to check the return status codes.
                    var test = oXmlHttp.responseXML.firstChild;
                    oXml = oXmlHttp.responseXML;
                }
                catch (e) {
                    try {
                        oXml = (new DOMParser()).parseFromString(oXmlHttp.responseText, 'text/xml');
                    }
                    catch (e) { }
                }

                if (!oXml || !oXml.firstChild || oXml.firstChild.nodeName == 'parsererror') {
                    alert('The server didn\'t send back a proper XML response. Please contact your system administrator.\n\n' +
							'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')\n\n' +
							'Requested URL:\n' + urlToCall + '\n\n' +
							'Response text:\n' + oXmlHttp.responseText);
                    return;
                }

                oFCKXml.DOMDocument = oXml;
                asyncFunctionPointer(oFCKXml);
            }
        }
    }

    oXmlHttp.send(null);

    if (!bAsync) {
        if (oXmlHttp.status == 200 || oXmlHttp.status == 304)
            this.DOMDocument = oXmlHttp.responseXML;
        else {
            alert('XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')');
        }
    }
}

FCKXml.prototype.SelectNodes = function( xpath )
{
	if ( navigator.userAgent.indexOf('MSIE') >= 0 )		// IE
		return this.DOMDocument.selectNodes( xpath ) ;
	else					// Gecko
	{
		var aNodeArray = new Array();

		var xPathResult = this.DOMDocument.evaluate( xpath, this.DOMDocument,
				this.DOMDocument.createNSResolver(this.DOMDocument.documentElement), XPathResult.ORDERED_NODE_ITERATOR_TYPE, null) ;
		if ( xPathResult )
		{
			var oNode = xPathResult.iterateNext() ;
 			while( oNode )
 			{
 				aNodeArray[aNodeArray.length] = oNode ;
 				oNode = xPathResult.iterateNext();
 			}
		}
		return aNodeArray ;
	}
}

FCKXml.prototype.SelectSingleNode = function( xpath )
{
	if ( navigator.userAgent.indexOf('MSIE') >= 0 )		// IE
		return this.DOMDocument.selectSingleNode( xpath ) ;
	else					// Gecko
	{
		var xPathResult = this.DOMDocument.evaluate( xpath, this.DOMDocument,
				this.DOMDocument.createNSResolver(this.DOMDocument.documentElement), 9, null);

		if ( xPathResult && xPathResult.singleNodeValue )
			return xPathResult.singleNodeValue ;
		else
			return null ;
	}
}
